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Mix dataset cacheline with registers r0-r7

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tevador
2019-01-13 21:14:59 +01:00
parent 48d85643de
commit a7ffe8c19a
8 changed files with 691 additions and 767 deletions
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src/executeProgram-win64.asm
+12 -33
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@@ -221,54 +221,33 @@ TransformAddress MACRO reg32, reg64
;xor reg32, -8 ;# C = all except 0 to 7
ENDM
ReadMemoryRandom MACRO spmask
ALIGN 64
rx_read:
;# IN eax = random 32-bit address
;# GLOBAL rdi = address of the dataset address
;# GLOBAL rsi = address of the scratchpad
;# GLOBAL rbp = low 32 bits = "mx", high 32 bits = "ma"
;# MODIFY rcx, rdx
push rax ;# preserve eax
TransformAddress eax, rax ;# TransformAddress function
mov rcx, qword ptr [rdi] ;# load the dataset address
xor rbp, rax ;# modify "mx"
; prefetch cacheline "mx"
;# prefetch cacheline "mx"
and rbp, -64 ;# align "mx" to the start of a cache line
mov edx, ebp ;# edx = mx
prefetchnta byte ptr [rcx+rdx]
; read cacheline "ma"
;# read cacheline "ma"
ror rbp, 32 ;# swap "ma" and "mx"
mov edx, ebp ;# edx = ma
and eax, spmask-7 ;# limit address to the specified scratchpad size aligned to multiple of 8
lea rax, [rsi+rax*8] ;# scratchpad cache line
lea rcx, [rcx+rdx] ;# dataset cache line
mov rdx, qword ptr [rcx+0] ;# load first dataset quadword (prefetched into the cache by now)
xor qword ptr [rax+0], rdx ;# XOR the dataset item with a scratchpad item, repeat for the rest of the cacheline
mov rdx, qword ptr [rcx+8]
xor qword ptr [rax+8], rdx
mov rdx, qword ptr [rcx+16]
xor qword ptr [rax+16], rdx
mov rdx, qword ptr [rcx+24]
xor qword ptr [rax+24], rdx
mov rdx, qword ptr [rcx+32]
xor qword ptr [rax+32], rdx
mov rdx, qword ptr [rcx+40]
xor qword ptr [rax+40], rdx
mov rdx, qword ptr [rcx+48]
xor qword ptr [rax+48], rdx
mov rdx, qword ptr [rcx+56]
xor qword ptr [rax+56], rdx
pop rax ;# restore eax
xor r8, qword ptr [rcx+0]
xor r9, qword ptr [rcx+8]
xor r10, qword ptr [rcx+16]
xor r11, qword ptr [rcx+24]
xor r12, qword ptr [rcx+32]
xor r13, qword ptr [rcx+40]
xor r14, qword ptr [rcx+48]
xor r15, qword ptr [rcx+56]
ret
ENDM
ALIGN 64
rx_read_l1:
ReadMemoryRandom 2047
ALIGN 64
rx_read_l2:
ReadMemoryRandom 32767
executeProgram ENDP
_RANDOMX_EXECUTE_PROGRAM ENDS